5666539 has 2 divisors, whose sum is σ = 5666540. Its totient is φ = 5666538.

The previous prime is 5666527. The next prime is 5666561. The reversal of 5666539 is 9356665.

5666539 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5666539 is a prime.

It is not a weakly prime, because it can be changed into another prime (5666519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2833269 + 2833270.

It is an arithmetic number, because the mean of its divisors is an integer number (2833270).

Almost surely, 2^5666539 is an apocalyptic number.

5666539 is a deficient number, since it is larger than the sum of its proper divisors (1).

5666539 is an equidigital number, since it uses as much as digits as its factorization.

5666539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 40.

The square root of 5666539 is about 2380.4493273330. The cubic root of 5666539 is about 178.2813691631.

The spelling of 5666539 in words is "five million, six hundred sixty-six thousand, five hundred thirty-nine".